Writing automated tests that focus on persistence
When writing persistence tests, we want to start a database when the tests begin and tear it down when the tests are complete. However, we don’t want the tests to wait for other resources to start up, for example, a web server such as Netty (which is required at runtime).Spring Boot comes with two class-level annotations tailored to this specific requirement:@DataMongoTest: This annotation starts up a MongoDB database when the test starts.@DataJpaTest: This annotation starts up a SQL database when the test starts.By default, Spring Boot configures the tests to roll back updates to the SQL database to minimize the risk of negative side effects on other tests. In our case, this behavior will cause some of the tests to fail. Therefore, automatic rollback is disabled with the @Transactional(propagation = NOT_SUPPORTED) class-level annotation.To handle the startup and teardown of databases during the execution of the integration tests...
